विष्णुपुराण - कर्म

कर्मणा जायते सर्वं कर्मैव गतिसाधनम् ।
तस्मात्सर्वप्रयत्नेन साधु कर्म समाचरेत् ॥

- विष्णुपुराण

Action leads to everything. Without action there would be nothing. Good action begets good results. Bad action begets misery. Hence one must always strive to do good deeds.

- Vishnupurana